Here's what users are saying:

Pure magic ★★★★★

by Amphoteres - Version 1.0 - May 27, 2014

Gives new meaning to the word lush. Absolutely phenomenally outstanding 

EPIC!!!!!!!!!!!!!! ★★★★★

by stormbox79 - Version 1.0 - Jun 21, 2014

If you play guitar, synths, or basically anything sound related, you NEED this app. Every single time I fire up Audiobus, this app ends up in the effects slot. Send a guitar thru this and end up in another galaxy, it is that good. Channel your inner pink floyd, call down a heavenly choir with your favorite synth app, just click buy and awesome becomes tangible!

Woah, great! ★★★★★

by Galaxyexplorer - Version 1.0 - May 2, 2014

If there is one iOS FX app to choose... well, it's this fantastic app. Point.  

Mesmerizing ★★★★★

by trance79 - Version 1.0 - May 2, 2014

This is one of the coolest effects with so much depth and massive amounts of sonic possibilities. It produces a truly mesmerizing, almost magical, quality to any instrument or sound. Do yourself a favor and buy Crystalline, now.

"Wow Holy Cow! Guitarism 12- string into Crystalline and I thought it sounded like 'Under the Milky Way Tonight'. I can't think of an instrument that would not sound fantastic with Crystalline. IGrand, Galileo, Sunrizer(holy another cow!), IPolySix all sounded like awesomeness." - NoiseHorse (Audiobus forum)

"Crystalline isn't what I was looking for many years... IT'S MUCH MORE!!! I just can't stop using it!!! By far, the best effect for guitar I've used in my life!!! Thanks again!!!" - Leonardo Leite De Castro (user)

Crystalline is a unique Shimmer Echo/Reverb effects processor for Audiobus and Inter-app Audio. 

Process synths, drum machines and hundreds of other apps by connecting through Audiobus. Use Crystalline as an effect inside Garageband, Auria, Cubasis, and AudioShare using Audiobus or Inter-app audio. 

Crystalline features two distinct modes: 


● PERFORM mode is focused around four XY touch pads. Touch to control DELAY TIME, FEEDBACK, REVERB LEVEL and LOW PASS independently for left and right channels. 

● TWEAK mode features large expressive sliders and additional effect parameters, allowing you to fine tune your sound. 

In addition to Audiobus and Inter-app Audio support, Crystalline can also process external instruments such as guitar, voice and synths by connecting a microphone or professional audio interface such as the Apogee Jam, ONE, or any iOS compatible USB audio interface. 

Check out our other FX apps including Echo Pad, Stereo Designer and Swoopster!


● requires iOS 12.4 or later 

● iPad Mini/iPad 2 or newer 

● Audiobus 3 compatible (Effect,Input, State Saving) 

● Inter-App audio compatible (effect node) 

● compatible with USB audio interfaces 


● Control left and right channel effects parameters independently or linked.

● 16 delay modes for a wide variety of pitch shifted delay effects.

● Multiple stereo output modes including: Wide Stereo, Cross Feedback, Stereo Tremolo and Sum to Mono

● Huge range of ambient sound effects possible, from beautiful shimmering reverbs to dissonant, metallic delays

Crystalline works with just about any professional iOS compatible USB audio interfaces. Here is a list of interfaces that have been tested and verified to be compatible: 

● Apogee Jam 

● Apogee Mic 

● Apogee ONE for iPad/Mac 

● Apogee DUET for iPad/Mac 

● Apogee QUARTET for iPad/Mac 

● iConnectMIDI2+

● iConnectMIDI4+

● iRig 

● iRig HD 

● iRig iMic 

● Focusrite Scarlett series (*requires USB hub) 

● Alesis io2 

● Alesis IO Dock 

● Behringer UCA202 

● many more 

iPhone, iPad, and iPod Touch are trademarks of Apple, Inc.